Currently I use Whatsapp or email to communicate with the social media team when I'm on the go. I'd like to have the Conversation feature in the mobile app so we can keep communicating when we are away from the computer.

This is definitely planned for the future. For now, you can reach conversations on your iOS device by going to hootsuite.com/m/conversations. It looks really great if you add it as a bookmark to your home screen!